Modulation Techniques in Telecommunications Essay

Open, View, and/or
Download this Document

Total Length: 1190 words ( 4 double-spaced pages)

Total Sources: 1+

Page 1 of 4

Modulation Techniques

What are the applications of modulation techniques in telecommunications?

Telecommunications modulating is a necessary process for an information bearing signal (as a waveform) to pass precisely through a transmission source. It is assigning a suitable wave using these procedures. The way it works is select characteristics of the carrier wave is varied in compliance with the signal (i.e. The modulating wave). It is then, transmitted through a channel with the original signal recovered in a process known as demodulation. This provides the receiver with all of the data and information, as it was intended from the sender. (Wright, 2004) (Horak, 2007)

There are multiple techniques which are used during the process. The most notable include: amplitude shift keying, binary phase shift keying and multiple phase shift keying. According to Wright (2004) and Horak (2007), each one of these is used to transmit the signal and provide the receiving party with the information in a specific format. (Wright, 2004) (Horak, 2007)

Amplitude shifting is when; the sine radio wave is being adjusted and boosted. This occurs using a number of techniques on the AM or FM band to include: modifying the amplitude, phrase or frequency. These procedures are utilizing the mark and space to improve the quality. They are produced through a function of changing the harmonics and the modulating index. (Wright, 2004) (Horak, 2007)

In the case of AM, sidebands are produced which go below or above the carrier. It is equal to the highest frequency content of the modulating signal. The bandwidth requires two times the strength of the larger frequency content from the modulating signal. This includes any harmonics and binary pulse modulating signals. (Wright, 2004) (Horak, 2007)

The FM signal is produced on multiple side band frequencies.

Stuck Writing Your "Modulation Techniques in Telecommunications" Essay?

View All Our Example Modulation Techniques in Telecommunications Essay

Have A Custom Example Essay Written

They can be produced above or below them on the total spectrum. In this situation, the bandwidth is a direct function of the highest modulating frequency and index. (Wright, 2004) (Horak, 2007)

Binary shift phase keying is when the sine wave carrier is changed by 180 degrees. This occurs with a coherent phase transition starting at zero. It is at this point, when the bit phase is compared with the previous signal on the spectrum. To transmit data at a popular rate equal to the bandwidth of 1 bit/HZ. (Wright, 2004) (Horak, 2007)

Multiple phase shifting is when two bits per symbol make the spectrum efficient. It is usually referred to as a 4 PSK. This is because there four amplitude combinations. they can be utilized to transmit more information per signal. (Wright, 2004) (Horak, 2007)

During this process, there are two different combinations which are utilized. The most notable include: 8 and 16 PSK. The 8 PSK uses a constant carrier amplitude with 45 degree shifts. The 16 PSK uses 22.5 degree changes of consistent amplitudes. This procedure leads to transmissions of 4 bits per symbol. (Wright, 2004) (Horak, 2007)

Multiple phase shift keying is more efficient. This is because of the greater the number of small phase transformations. These factors make it challenging for the signal to demodulate in the presence of background noise. The biggest advantages with this technique, is the carrier amplitude is efficiently utilizing nonlinear power amplification. (Wright, 2004) (Horak, 2007)

These different applications can be used to transmit the signal in different formats. Each one offers flexibility that will help the sender and receiver to be more efficient. Once this takes place, is the point they can effectively.....

Show More ⇣

     Open the full completed essay and source list


OR

     Order a one-of-a-kind custom essay on this topic


sample essay writing service

Cite This Resource:

Latest APA Format (6th edition)

Copy Reference
"Modulation Techniques In Telecommunications" (2014, February 07) Retrieved May 22, 2025, from
https://www.aceyourpaper.com/essays/modulation-techniques-telecommunications-182359

Latest MLA Format (8th edition)

Copy Reference
"Modulation Techniques In Telecommunications" 07 February 2014. Web.22 May. 2025. <
https://www.aceyourpaper.com/essays/modulation-techniques-telecommunications-182359>

Latest Chicago Format (16th edition)

Copy Reference
"Modulation Techniques In Telecommunications", 07 February 2014, Accessed.22 May. 2025,
https://www.aceyourpaper.com/essays/modulation-techniques-telecommunications-182359
   

Open, View, and/or
Download this Document
order custom essay example